What is the purpose of the iot protocol mqtts qos quality of service levels

MCQ Answer

What is the purpose of the IoT protocol MQTTs QoS (Quality of Service) levels?

Topic : Security and Future of IoT Ecosystem

A. Control device power consumption

B. Ensure reliable message delivery

C. Enable peer-to-peer communication

D. Facilitate device discovery

Correct Answer is :

B. Ensure reliable message delivery